INDEX. 



803 



Davis Junction, 111., wells at 607 



Dawson, George M., cited on centers of ice dispersion . 22 



cited on Cordilleran ice field 22 



Dean, George, acknowledgments to 627 



Deans Corners, 111., well at 58L 



Becatur, 111., sections of drift at 203-204 



wells at 729 



Decorra, 111., wells near 680 



Deer Creek, gravel deposits in 274 



Deer field, till ridge near 381 



Deerfield post-ofl5ce, HI., well at . 602 



Deep River, exposures of clay near 410 



Deep River Basin, old bay near 431 



Dekalb, 111., wells at 602-603 



Dekalb County, 111., altitude of 9 



bowlders in 268 



buried soil in 264 



general features of 599-600 



structure of drift from Bloomington to 267-268 



wells in 599-604 



Delavan, 111., wells at 691 



Denmark, Iowa, section in wells near 54,55 



Densmore, J. E., wells of 63, 64 



Deselm post-office, 111., wells at 654 



Des Moines County, Iowa, wells in 50 



Des Plaines River, beacb on west side of 430 



deposits along 376-377 



erosion in valley of « 422-423 



striae in valley of 415 



terraces on 321-322 



till ridge near 380 



topography along 384 



topography near 345 



watershed of the 503-505 



Des Plaines Village, 111., wells at 587 



Detroit, 111., wells near 720 



" Devil's Backbone," description of 286-287 



Devonian shale 14 



Dewey, F. "W., information furnished by . 649 



De witt County, 111., altitude of 10 



general features of 704-705 



wells in 704-707 



Dickey, 111., wells at 654 



Dickerson.Ill., well near 702 



Diona, 111., wells at 736 



Displacement of the Mississippi, temporary 89-97 



Dixon, 111., exposures of Iowan till in 138 



wells at 609 



Dowagiac River, course of 540 



Downers Grove, HI., wells near 593 



Donovan, 111., drift sheets at 143 



wells near 659 



Dooley, P. T., information furnished by 580 



Douglas County, 111., altitude of 10 



general features of 731 



wells in 236,731 



Drainage, changes in southwestern Indiana in 97-104 



from the ice sheet in the Mississippi Valley 71 



influence of the drift upon 460-461 



Drenthe, wells at 403 



Drift, altitude of 9-11 



average thickness of 544-546 



changes in central Illinois in 28 



methods of estimating thickness of 543 



relation of the Illinoian to the Iowan 24-25 



outline of and intervals between sheets of 20-21 



Drift, previous investigations of 



sections of the Illinoinu 



structure of 



thickness of 



topography of 



Drift border, character of east of the Illinois River. . 



determination of the 



distribution of the 



structure of, in southern "Wisconsin 



structure of, in southeastern Iowa 



topographic character of the 



Driftless area, features of 34, 144, 152. 153, 154, 



Drift surface, Illinois, table of altitudes of 



Michigan, Indiana, and Iowa, averagealtitudeof. 



Drumlins, occurrence of 



Dubois County, Ind., drift border in 



Dubuque, Iowa, analyses of soil at 



Dudley, 111., wells at 



Duucanville, 111., wells near 



Dundas, HI., wells at 



Dundee, 111., wells at 



Dunlap, wells near 207- 



Dunning, 111., well near 



Dupage County, 111., altitude of 



area and general features of 



wells in 



Dupage River, deposits on 



watershed of .' 



Duquoin, 111., wells near 



Dustiu post-office, 111., wells at 



D wight, HI., wells at 



Dyer, Ind., beach near 



section of beach at 



Eagle Lake, wells near 



Earlville, 111., wells near 



Early "Wisconsin drift 



East Carondelet, 111., wells at 



East Crow Creek, watershed of 



East Dubuque, Iowa, soil analyses at 



well at 



East Lynn, HI., wells at 



East St. Louis, HI., analyses of gumbo at 



drift below 



wells at 



Eden Station, 111., wells near 



Edgar County, HI., altitude of 



general features of 



outwash in northern 



wells in 217 



Edgewood, 111., wells near 



Edwards County, HI., altitude of 



general features of 



wells in 



Edwards River, description of course of 



well near 



Edwardsville, 111., wells at 



Eel River, striae along 



Effingham, HI., wells near 



Effingham County, 111., altitude of 



general features of 



wells in 



Eldorado, HI., wells at 



Elida, 111., wells at 



33-34 

 27-28 



26-27 



64 



37-38 



34-38 



43-44 



40-63 



38-40 



183, 188 



9-11 



12 



73, 135 



35,69 



98, 102 



160, 164 



733 



756 



775-776 

 478-479 



